Snap fastener



Patenteci Dec. 6, 1927.

GEORGE I-IENRY ELWELL, (VJZE CLEVELAJD',orrio3eserenouxroCrr1errresmnrrmr coM= PANYQ OEGAMBR'DGE,MASSACKUSETT'S, ACGEPORATION 'OFMAINE.

Application filedctober31, 1923. Serial No. 671,965.

7My iiiVention' reites to iinproveinents in snap faStener-sandinore-partieularly to stuci endsocket .asteneis separable only by arelativetipping movennent in a certain di- 'rectioii; i

nvei' rigid tud member t-liat' may be used in eombinatio1i Witha-"sockei; memberemployingb resiliei1t ele1i1entsuch as a split springring.

thiS aud other objec'ts inview, as

WVitli willfmore fully hereinafter appear, che in vention=censistsincertainfeatures of nove consi'riiction and'arral1igei1ient of partsbereinafter described, illustrated in the accom panying drawing andparticularly pointed out wherein patentable novelty is claimed forcerta-in eatures of the device, itbeing ,understood that within thescope of WhLt hereinafter thus is claimed various changes in form,proportion, size and minor details of the construction can be madewit-hout departing from the spirt or 1nodifying any of the advancages ofthe invention.

25. The following is the description of an embociiment of niy invention,reference being had to the accmpanyingdrawing, in which Figure 1 is aside view of a stud; Figure2 is a top view of the saune studi Withshouicler shown in dotted 1ine; Figure 3 is a side view of interlockedastener members 1nounted on abric, the socket member being'partly shownin cross-section; Figure 4 is {i bottoni view of socket member showing,partiy in dotted line, the normal position O split ring; and Figure 5 isa view si1nilar.to the next preceding figure excepting thaa the splitring is shown in shifting position es When members are 'interiocked.

Ref-erring more particularly to the drawing, in which similar Parte aresimiiariy numbered, the stud member has a base 1, neck 2 end head 3, a,sbest -shown in Figures rif 1 and 3,and proper attaehing 1neans 4, us

shown in Figure 3. The head 8 and the neck 2 are so f0rmed that the head3 pre sents a rearwardly facing abrupi; shouider 5 nearly encompassingthe stud Ine1nber, or on three sides thereof as shown in dot-ted line inFigure 2. A1; the fourth side ,of the stud the neck portion 2 isextended lateral-ly with relation to the head' of the stud as clearlyshown in Figs. 1 and 2, so that the head 3 presente to that portion ofthe neck 2 a rounded Sh0u1det 6, as best shown in Theobject ofmyinvention is to pr0vide a resiiient 1na-ns aciaped t0 interiockii1gijrfFigure 1'. The'i1ejck2of t1ie Studis, tiie'refoire, made egg-shaped incro'ss-sec-ion for. the purpose of prviding the. three-Sidd lockingengageinent Wili thefocke't' ibis egg-slialped cross-sect-ion being best,ilhis tra't'ed in dotted iines, Fig. 2. VVhile hfrve: shown in Figure 3a socketinember of zr prrticui&r coristruetionyet that ineinber n1ziy beof any other constructin empi0yinga1iy engage a. stud niember of t1ietype abovedeseribed. For thepurpose of deseription. I have prefer1teci'to show! in Figures" 3,f:t,; and 5, a soeket ineniber enqloying a sp1il;ring 7, formed from spring wire, as t-he resilient element.

In operation, the soeket member is passed onto the stud member and ashead 3 enters 'the stud passage it engages the inner surface of ring 7and spreads thai; ring suffi- 7 ciently te allow the head 3 to passthrough the ring 7 which immediately t-hereafter retracts as soon as itis permitte'd to engage neck 2. Ring 7, nezirly throughout its entrecircumference, is thus ioclged behind the abrupt shoulder 5 and isthereby positively loeked against direet withdrawal end against tipping-of the socket member in any direction emanating from any portion ci cheabrupt shoulder 5. In assuming the 8. loeked positi1i, as Shown' inFigure 8, the ring 7 is shifted fron1 its nor1nal position, ELS shown inFigure 4, to the position shown in Figure 5. T0 separate the I"a stenermembers the socket me1nber inust be tipped so thai; the rin-g 7 is firstforced over the rounded shoulder 6 of the st-ud head 3 and thusspreacling ring 7 untii ii; siips fr0m under and behincithe abruptshouider 5 and releaseg che socket member'from its inter- 93 10ckedengagement with the stud memb-er.

VVhat I claim is-:

1. A snap fastener coniprising, in combination, a stud and a soeketadapted to be engaged by? direct axial 1novement of one toward theother,said sockt presenting a stud-receiving aperture intersected by resilientstudi engaging means, a cooperating "stud having head and neck portions,said gaging 1neans to prevent separation of the fastener when stress sexerted at any one 01 2111 of the sides where said ebrupt shoulder isprevided, end a laterally extended porton 01 said neck provdecl at thefourth side of the stud te previde a smoethly rounded surfece ai: seidfourth sde whereby said resilent stud-engaging meens mev be dis engagedfrem che stud by a pull edjecent seid luterally extending portion.

2. A snap fesener eomprisng, in cembinetion, a stud end a soeket adaptedto be engaged by drect axia1 movement of' one to- Wa1d the other, saidsecket presenting e studleceiving' aperture intersccted by resilentstud-engaging menns, a. ceoperafng stud having L base, a hez1d end aneck between se.d base and said hem. sad neck beng subshmtinllyegg-sheped in cross-seetien 1'0 prm*ide 2m alnrupt sheuder hetween thehead and neckela flnee sides fm interlecking engagement wth sudresilient 1nenns When said stud end socket are engnged, and to provideat the fourth sle e Wall portion substentally even with the head topermit the resilient 1nez1ns to be guded over the heed When a pullexerted ai; suid fourth side.

3. A snep fastener comprsng, in combnaton, a sturl end e socketadaptefl. o be engeged by direct exia nlovenient' of one toward theother, said socket presenting a stud-receiving aperture intersected by aring type resent studengaging spring, e .coeperatng stud huving e base,a head end e neck between sad base end seicl head, suid neck beng eflsettmmrrfl onesde relative te seid head te provide un abrupt sheulderbetween the lw:ul end neek et three sdes f01' intcrleckinge1lgrngen1e1i1 with said resilient meens when saic1 stvud end socket areen guged, end in previde nb the fourth sde a \\':111 pertiensubsizmtnlly even with flle11ead te permt the resilient means to beguided ever [ho hend when a pull exerted et seid feurtzh side.

GEORGE HENRY ELWELL.

